Snowplow



Jan. 15, 1929.

L. B. ANG ELL SNOWPLOW Jan. 15, 1929.

L. B. ANGELL ,sNowPLow Filed Sept. 12,. 1927 2 Sheets-Sheet 2 Patented Jan. 15, 1929.

UNITED STATES LYNN B. ANGELL, OF SOUTH OTSELIC, NEW YORK.

SNOWPLOW.

Application filed September 12, 1927. Serial No. 219,112.

This invention relates to a snowplowadapted to be used more particularly as an attachment to the front end of the chassis frame of a motor vehicle to be propelled by 6 and ahead of said vehicle and refers more particularly to the construction of the mold board and scraper blade along the lower edge thereof'and to the supporting-frame therefor which is adapted to be hinged to 10 a supplemental frame carried by the front end of the chassis frame of an automobile to swing vertically about a horizontal axis for varying the depth of cut of the scraper blade into the snow or ice. Themain object is to support the mold board and scraper diagonally to the direction of travel of the machine to which it is attached and to construct and support the mold board. and scraper in such manner that'it will enter the snow and ice with a minimum shearing resistance and deflect ,said snow'or ice laterally to one side of the pathof travel of the plow as fast as it is loosened and picked up by the scraper blade thereby preventing the accumulation of excess. quantities of the snow and ice against the blade and mold board and incidentally greatly reducing the resistance to the for ward propulsion of the plow.

One of the specific objects is to make the -mold board concavo-convex in cross section withits upper and lower edges disposed in horizontally parallel planes but in vertically intersecting planes so that the vertical plane of its upper edge will intersect the front edge of the scraper blade substantially midway between the ends thereof while the end of the upper edge of the mold board projecting farthest forward will overhang and project forwardly beyond the corresponding end of the scraper blade to trap the snow andice at the leading end of the plow against overriding the top of the plow and at the same time assist in the lateral deflection of the snow and ice toward and away from the rearmost end of the plow.

Another specific object is to provide a simple and efiicient means for supporting the scraper blade in an upwardly and rear-- wardly inclined position and for clamping the lower edge of the mold board along the rear edge of the scraper blade so as to form a substantially continuous unbroken impact surface from the cutting edge of the blade against the entire front surface of the mold I heard from bottom to top thereof,

Other objects relating more particularly to the bracing .of the mold board will be brought out in the following description.

In the drawings Figure l is a top plan'of a snow plow embodying the various features of my invention. Y I

Figure 2 is a side elevation of the same, the dotted lines indicating portions of the (llassis frame of an automobile to which the supplemental frame of the plow is attached.

Figure?) is a vertical sectional view taken in the plane of line 3-3, Figure 2.

Figure 4 is a horizontal sectional view through the mold board in a plane just above the scraper blade, showing the lower por-- tions of the supporting frame for the scraper blade and mold board, together with the hinge connections between said supporting frame and supplemental frame which is adapted to be secured to the chassis frame.

Figure 5 is an enlarged transverse scctional View through the scra )er blade and adjacent portion of the mol board, showing more particularly the manner of mount-- ing the scraper blade and mold board upon the underlying portio'nsof, the supporting frame taken on line 5-5, Figure 4.

In oider that the invention may be clearly understood I have shown by dotted lines the front portions of the sills -A of .an automobile to which a supplemental frame 1 is adapted to be secured by bolts 2 or equivalent fastening means capable of being released when it is desired to remove the plow from the chassis frame.

As illustrated, this supplemental frame comprises a pair of upright posts 3 arranged in parallel spaced relation corresponding approximately to the spacing of the sills A and connected by lower and upper cross bars 4 and -5 which are braced against the posts 3 by diagonal braces 6, Figure 3.

These posts 2 extend above and below the horizontal plane of the sills A and Ion are provided with rearwardly extending varms 7-- adapted to be clamped by the bolts 2- to the sides of the sills, the upper ends of the posts being additionally braced to the rearwardly extending bars --7 by braces 8 while the lower cross bar 4-- is connected to the bars 7 by additional braces 9 as shown more clearly in Figure 2.

The supporting frame for the mold board and scraper comprises a pair of forwardly and rearwardly extending bars --10 and --10 arranged in parallel spaced relation corresponding approximately to the spacing of the upright posts 2 and are pivoted at 11- to the lower ends of said posts to swing vertically about a horizontal axis parallel with the vertical plane of said posts and to extend forwardly and downwardly some distance therefrom but of unequal length to support at their front ends the mold board and scraper blade in a horizontal plane diagonally to the direction of travel of the propelling machine.

A substantially straight angle iron -12 is bolted or otherwise secured-to the front ends of the bars -10+ and l0' to. extend horizontally and diagonally to the direction of travel of the machine and some distance laterally beyond said bars -l0 and -10' or substantially equal distances beyond the longitudinal 'center of the chassis frame and supplemental frame l to form a part of a wearing shoe adapted to ride upon or in close proximity to the pavement or road bed when the plow is adjusted for use.

This angle iron 12 is arranged with one of its flanges in a substantially horizontal plane and its other flange in a vertical plane. along the front edge of the horizontal flange for receiving and partially supporting the lower edge of a mold board as +13 which is bolted or otherwise secured to the front face of the upright flange as shown more clearly in Figures 2 and 5.

An additional angle iron --14- extends horizontally along the front side of the vertical flange of an angle iron 12 in sufficiently spaced relation thereto to receive the lower edge of the mold board 13- between them and is-bolted or riveted to the upright flange of the first-named angle iron by the same rivets which fasten both angle irons to the front and rear faces of the lower edgeof the mold board.

That is, one of the flanges of the angle iron ll is disposed in a horizontal plane and its other flange disposed in a vertical plane along the rear edge of the horizontal flange to engage the front face of the lower edge of the mold board l3 and thereby to firmly hold that part of the mold board between the upright flanges of both of the angle irons.

X substantially straight and flat scraper blade 15- of steel or other suitable metal is seated upon the front edge of the lower horizontal flange and. upon the upper edge of the upright flanges of the angle iron -14- and is rigidly secured to the front angle iron by bolts -1G as shown more clearly in Figure 5 so that the scraper blade 15 will be firmly held in an upwardly and rearwardly inclined plane with its rear edge resting against the adjacent portion of the mold board --13 and its lower front edge beveled and disposed in substantially the same horizontal plane as the lower faces of the angle irons .-12 and --14 to ride upon or closely to the surface of the pavement when the plow is adjusted for use;

The bars l0' and 10'- are held in fixed relation by cross braces -17-- rigidly secured thereto and to eachother to form a part of the supporting frame for the mold board and scraper blade, said bars 10- and l() being also connected to the opposite ends of the angle iron -12 by addi tional braces 18, Figure 4:.

The mold board 13 and scraper blade -l5- extend horizontally and diagonally to the direction of travel of the machine the full length of the angle irons --12 and l4, the mold board being curved rearwardly, upwardly and forwardly from its lower edge to its upper edge and is preferably made of sheet steel or equivalent metal concaro-convcx in cross sect-ion with its concave side facing forwardly and its upper edge disposed at a greater angle to the direction of travel of the machine than its lower edge.

That is, the lower and upper edges of ,the mold board are disposed in parallel horizontally spaced relation but in different vertical planes intersecting each other substantially midway between the ends of the mold board so that the end of the upper edge corresponding to the leading end of the lower edge projects forwardly some distance beyond said leadin end or toe of the scraper blade While the other end or heel of the upper edge of the mold board is disposed in a vertical plane at the rear of the heel of the scraperblade, the longitudinal center of the mold board being disposed in a horizontal plane substantially parallel with the cutting edge of the scraper blade.

The Object of this particular construction of the mold board is to cause the snow or ice impinging against the front concave face thereof as the plow is moved forwardly to be deflected laterally toward the heel of the plow as fast as it is loosened and picked up by the toe of the mold board and also to confine the loosened. snow andice 'between the lower and upper edges of the mold board particularly at the leading ends thereof and .thus to prevent over-riding of ice and snow over the top of the mold board.

An additional anglc iron -19- is riveted or otherwise secured to the upper edge of the mold board 13 to extend from end to end thereof for reinforcing purposes.

Suitable braces -20 are extended across and around the rear convex sides of the mold board in longitudinally spaced relation to follow closely the contour thereof and are riveted or otherwise secured to said mold irons 12 board and to the lower and upper angle and 19 for rigidly bracing and reinforcing the mold board against deformation or yielding by pressure of the ice and-snov. t-hereagainst when the plow is in action.

The end braces or reinforcing bands 20- are connected by rearwardly extending braces 2land -21'- to thearms -10 and -l0- while the intermediate brace or band 20 is connected by a brace 22 to the thrust bar 10 said braces -2l, 21 and -22- serving to additionallyliold the mold board against yielding under pressure of .the snow and ice against its front face;

It will be seen from the foregoing descriptionthat the mold board and scraper blade together with the supporting frame therefor are movable vertically about the axis of the pivots 11- for varying the depth of cut of the scraper blade or rather for moving the. mold board and scraper blade to and from its operative position. v

. Any suitable means may be provided for raising and lowering the. supporting frame.

for the mold board and scraper blade, said means consisting in this instanceof a pair of chains or cables 23 having their front ends connected to a suitable eye bolt 24 on the upper angle iron 19 near the center thereof and their rear ends adjustably connected to a pair of hooks 25 which, in turn, are attached to anchor loops 26-- on the uppercross bar 5 of the supplemental frame 1.

Operation. 5

The raising and lowering of the mold board and its supporting frame may be accomplished by simply releasing the chains -24 from the hooks -25 and then raising or lowering the mold board as required and re-anchoring the chains in their respective hooks.

' \Vhen the mold board and scraper blade and the supporting frame therefor are adjusted for use and propelled forwardly into ice or snow the latter are first picked up by the toe of the scraper blade 13 which deflectsthe loose snow or ice laterally toward and beyond the heel of the mold board as fast as it is picked up by the scraper blade, it being understood that the overhanging of the upper edge of the toe of the mold board beyond the vertical plane of the corresponding end of the scraper blade effectively prevents the over-riding of the board having its lower edge secured to the rear face of the rear'flange and its upper edge disposed in a vertical plane intersecting the front edge of the scraper blade between the ends thereof.

2. In a snowplow, a straight angle iron extending horizontally diagonally to the direction of travel of the plow and having one of its flanges extending upwardly along the rear edge of the other flange, a substantially flat and straight scraper blade seated fiatwise on the front edge of the lower flange and the upper edge of the rear flange and secured thereto to assume an upwardly and rearwardly inclined position, and a mold board having its lower edge secured to the rear face of the rear flange, and its'upperedge disposed in a horizontal plane, but in a vertical plane intersecting the front edge of the scraper blade substantially midway between the ends ofsaid blade.

3. In a-snowplow, a straight angle iron extending horizontally diagonally to the direc tion of travel of the plow and having a vertically projecting flange along its rear' edge, an additional straight angle iron parallel with the first-named angleiron and in the same horizontal plane and having its front edge provided with a vertical flange adjacent the rear flange of the first-named angle iron, a substantially straight and flat scraper blade secured to the front edge of the lower flange and to the upper edge of the vertical flange of the first-named angle. iron to incline rearwardly and upwardly across. the angle of said first-named angle iron, and a mold board having its lower edge secured to and between the adjacent upright flanges of both of the angle irons and its upper ge 

